Skip to main content

Re: [MW:35191] Re: WELD DISTANCE AS PER ASME

By Materials & Welding
Dear Sir,

The minimum distance between welds is specified as follows: 

 1. ASME B31.3 Process Piping:
For Circumferential Welds: The minimum spacing between circumferential welds must be at least four times the thickness of the thicker component, with a mandatory minimum of 25 mm (1 inch).
For longitudinal welds on adjacent shells or sections, the required distance should be no less than five times the wall thickness of the thicker section, with a minimum spacing of 38 mm (1.5 inches).
2. AWS D1.1 Structural Steel Welding:
 The distance between welds in structural steel applications should be at least four times the thickness of the thinner member being joined, with a minimum requirement of 10 mm (0.4 inches). 
3. API 1104 Pipeline Welding:
For adjacent girth welds, the minimum spacing must be at least one pipe diameter, or 100 mm (4 inches).

Best regard,
Mostafa Daif, Cweng,

Le mar. 27 août 2024 à 10:47, S P Ali <syabuzar@gmail.com> a écrit :
ASME does not outline this, whereas some British standards, such as "BS 4515:2009," require 4 times the wall thickness of the thinner part to be joined.

ARAMCO says in "SAES W11" spacing shall be 3x wall thickness or 20mm, whichever is greater.

If you're working on a project, double-check the specifications or applicable code. If you're preparing for an interview, remember both.

On Tuesday, May 2, 2017 at 9:46:40 AM UTC+3 hajarath ali wrote:
Not required any minimum distance between Socket weld joint as per ASME B31.3.

Referance : 

B31.3 Interpretations No. 14 Interpretation: 

Question (4): Does ASME B31.3-1993 Edition, Addenda b, have requirements for the minimum lengths of pipe sections between welds? 
Reply (4): No


On Sunday, April 23, 2017 at 9:01:07 AM UTC+3, Faizal, Majeed [c] wrote:

Can anyone please confirm the Minimum distance between Socket weld joint as per ASME B31.3 where its specified.

 

Regards,

 

Faizal

 

 

 

 

 

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/1f085422-cb32-4ede-9502-86b7808aad78n%40googlegroups.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CANRRH0LNDyW-vVyW1cNOXCdMV_XAvP-LBMthdfks3Z2b5H2QXQ%40mail.gmail.com.

Comments

Post a Comment

Popular posts from this blog

Re: [MW:34105] SA266 GR4N 4 Cycle SPWHT

By Materials & Welding
Hi,  You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this.  Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime.  Again, these simulated no. Of cycles shall be specified in MTC.  The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case).  One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example.  In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...
21 comments
Read more

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

By Materials & Welding
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
Post a Comment
Read more